Calculate the time needed for a 2.5 kilowatt electric motor that performs 7.5 x 10^4 Joules of applied work.

Q: A boat (with a flat bottom) and its cargo weigh 5,600 N. The area of the boat's bottom is 5 m2. How…

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Q: Which of the statements below best describes planetary orbits in our solar system? They generally…

A: The planets consistently show low eccentricities in the solar system. So, their orbits are…

Q: The battery terminal voltage in the figure below is  = 7.70 V and the current I reaches half its…

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Q: A shopper weighs 2.50 kg of apples on a supermarket scale whose spring obeys Hooke's law and notes…

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Q: 3. What is the apparent rule for combining equal resistances in parallel combination circuits? Cite…

A: we have to dicuss the rule for finding equivalent resistances in series and parallel connection of…

Q: 24. A rocket is fired upward on a straight upward trajectory at 90 degrees to the surface perfectly,…

A: Given data:  Initial velocity at ground (u) = 0 m/s Acceleration (a) = +29.4 m/s2 Time (t) = 4 s…

Q: A rigid, insulated vessel is divided into two compartments connected by a valve. Initially, one…

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Q: The Earth is shown with the equator marked. Another circle is marked that corresponds to a latitude…

A: Consider the radius of the earth, Re the time period of the rotation of the rotation of the earth, T…

Q: Three point charges are positioned as follows: a positive charge +q = +lql is located on the x-axis…

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Q: mangetic lift used to hoist very heavy iron objects at a scrap yard lifts a car of mass 2367.55 kg…

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Q: A 2.20 kg block is initially at rest on a horizontal surface. A horizontal force of magnitude 4.22 N…

A: Given:-  The mass of the block is m = 2.20 kg  The block is initially on the rest.  The applied…

Q: Different wavelengths (frequencies) of light let us see different aspects of the galaxy, which type…

A: Required : The correct option.

Q: Problem 2 A wood pole of 5.2 meters and 320 kg mass is lifted from the horizontal position to an…

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Q: 3. A 2.65-kg box is sliding down a ramp with an initial speed of 1.25 m/s. The angle of the ramp is…

A: Given:-  The mass of the box is m = 2.65 kg  The initial speed of the mass is u = 1.25 m/s  The…

Q: An ice maker operating at steady state makes ice from liquid water at 32°F. Assume that 144 Btu/lb…

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Q: In the given circuit, the capacitor is initially discharged. How long after the switch is closed…

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Q: Please refer to the picture for the formulas and constants that have to be used and shown in this…

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Q: 1. A rollercoaster car with a total weight of 500 kg entering Aa loop with a velocity of 35 m/s. The…

A: mass (m) = 500 kg velocity (v) = 35 msradius (r) = 10 m

Q: A 24 [V] potential is supplied across terminals a and b to fully charge the capacitor network shown…

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Q: A horizontal block-spring system with the block on a frictionless surface has total mechanical…

A: Given , T.E.= 46.9 Joule  A= 0.277 m

Q: A car is stopped at a traffic light. It then travels along a straight road such that its distance…

A: Differentiate the function of distance with respect to time to obtain the function of velocity.…

Q: The gravitational force between two very large metal spheres in outer space is 56 N. How large would…

A: Given data:  The gravitational force between two metal spheres (F) = 56 N The new masses of the…

Q: Let S = (1 m) + (2 m)) + (2 m)k and 7- (3 m)2 + (4 m)k. The angle between these two vectors is given…

A: Given data:  Two vectors S = (1m)i + (2m)j + (2m)k T = (3m)i + (4m)k Required: The angle between…

Q: Which listed below is NOT considered to be Newton's Laws of Motion? Please select ALL that apply.…

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Q: A 99-kg box, initially at rest on a frictionless surface, ac while acted on by a constant horizontal…

A: From Newton's second law of motion , we know that  F = mass * acceleration.

Q: The existence of the dwarf planet Pluto was proposed based on irregularities in Neptune's orbit.…

A: Given:-  The existence of the dwarf planet Pluto was proposed based on irregularities in Neptune's…

Q: The bar shown below is inclined at 45 degrees with the horizontal and at equilibrium. The force at C…

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Q: A rocket with a mass of 4,000 kg has an engine that exerts a force of 18,720 N. What is the rocket's…

A: Write the expression for the force. F=ma Here, m is the mass and a is the acceleration.

Q: In order to form a black hole, a star must be about how much more massive than our Sun? a. Fifty…

A: As per the Theory of black hole, When a big giant star is dead, The star Formed in to black hole.…

Q: Problem 1.56Compute the line integral of v = 6x + yz² ŷ+ (3y +z) î along the triangular path shown…

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Q: home run is hit in such a way that the baseball just clears a wall 16.0 m high, located 126 m from…

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Q: 2. a. Derive an expression for the interference pattern for three slits equally spaced by a distance…

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Q: calculate the speed of the wave that the string can produce; linear density= 6kg/m, mass= 50kg and…

A: Given Data, Linear Density μ=6 kg/m Mass (m)=50 kg Gravitational acceleration (g)=9.81 m/s2

Q: Take ↓ to be the +y direction. You throw a baseball downward with v0 > vter. Sketch the velocity…

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Q: were to search 10. A 79-kg person stands on a bathroom scale and rides in an ele- vator whose…

A: According to question we need to find acceleration for t  = 8 sec.

Q: What is the resistance of a circuit operating at 13.0 V and delivering a current of 7.1 A? Give you…

A: Given That: The oprating at Voltage, V=13 Volts The Delivering Current is, I=7.1 Amp

Q: 1. Consider the following physical quantities and determine which physical quantity of interest they…

A: From the Given physical quantities we have to classify each quantity,

Q: Consider the 65.0 kg ice skater being pushed by two others shown in the figure. F₁ Ftot F₁ Free-body…

A: Given, mass of the skter, m = 65.0 kg Force  F1 = 28.8 NF2 = 18.6 N

Q: 20. Spring Motion A weight attached to a spring is pulled down 2 in. below the equilib- rium…

A: initial pull of the spring = 2 inch below the equilibrium time period (T) = 13 sec

Q: Power Through A Circuit. An AA battery (E = 1.50 [V]) with in internal resistance of r = 0.200 is…

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Q: You are making a sculpture that is a pyramid with a square base . You want the height of the pyramid…

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Q: A Force A 0.25 Kg 2.45 N 0₂ 0 B Force B 0.30 Kg 2.94 N Op 210 Force C Experimental C 0.18 Kg 1.764 N…

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Q: cts er of

A: Given data: The resistance R =187.4 ft.  Resistance thermometer R=164.2 ft  Temperature T= 20°C…

Q: Problem 2: A hollow cylindrical shell of length L and radius R has charge Q uniformly distributed…

A: Given, a hollow cylindrical shell Radius of shell = R Length of shell=L charge Q is distributed…

Q: Suppose a spectral line from an object in space was shifted from 5007.0 to 5100.0 Angstroms. Is this…

A: According to question we need to find--- Is this an example of blueshifting or redshifting?

Q: A shopper weighs 2.00 kg of apples on a supermarket scale whose spring obeys Hooke's law and notes…

A: Given value--- firstly 2kg mass apples joint to spring and then stretch to 2.5 cm. We have to find…

Q: a. Draw free-body diagrams for blocks A and B. Clearly label each of the forces using the notation…

A: The figures below show the free body diagrams of the two blocks.

Q: The International Space Station has a mass of 440,725 kg and is located 420 km away from the surface…

A: Given, Mass of ISS (m)= 440725 kg  Height from surface of earth (h)= 420 km  Mass of earth(M)= 5.97…

Q: A 2.50-mol sample of gas is compressed isothermally from 20.0L to 5.00L under a constant external…

A: Given , No. Of mole of gas (n)= 2.50 mol  Initial volume ( Vi) = 20L  Final volume (Vf) = 5L…

Q: In the figure, a cord runs around two massless, frictionless pulleys. A canister with mass m = 25 kg…

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Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.